import { useEffect, useMemo } from 'react'
import { useMutation, useQuery } from '@tanstack/react-query'
import { useNavigate, useSearchParams } from 'react-router-dom'
import dayjs from 'dayjs'
import { Button, Card, Checkbox, Col, DatePicker, Form, Input, InputNumber, Radio, Row, Select, Space, message } from 'antd'
import { HomeOutlined } from '@ant-design/icons'
import client, { apiPrefix, unwrap, type ApiResponse } from '../../api/client'
import { resourceApi } from '../../api/resources'

const productOptions = [
  '인터넷', 'TV', '집전화', '인터넷전화', '신용카드', '기타', '홈IOT', '동반', '후결합', '재약정', '소호', '원스톱', '렌탈',
]
const options = (values: string[]) => values.map((value) => ({ value, label: value }))

export default function OpenHomeSaleWritePage() {
  const navigate = useNavigate()
  const [search] = useSearchParams()
  const editId = search.get('id') ? Number(search.get('id')) : null
  const [form] = Form.useForm()

  const companies = useQuery({ queryKey: ['homesale-write-companies'], queryFn: () => resourceApi.list('companies', { size: 200 }) })
  const inOptions = useMemo(
    () => (companies.data?.items ?? []).filter((c) => String(c.type) === 'IN').map((c) => ({ value: c.id, label: String(c.name) })),
    [companies.data],
  )

  const detail = useQuery({
    queryKey: ['homesale-detail', editId],
    queryFn: async () => {
      const { data } = await client.get<ApiResponse<Record<string, unknown>>>(`${apiPrefix()}/homesales/${editId}`)
      return unwrap(data)
    },
    enabled: Boolean(editId) })

  useEffect(() => {
    if (!detail.data) return
    const row = detail.data
    const phone = String(row.phone ?? '').replace(/\D/g, '')
    form.setFieldsValue({
      ...row,
      installDate: row.installDate ? dayjs(String(row.installDate)) : dayjs(),
      receiptDate: row.receiptDate ? dayjs(String(row.receiptDate)) : dayjs(),
      products: String(row.products ?? '').split(',').map((v) => v.trim()).filter(Boolean),
      phone1: phone.slice(0, 3) || '010',
      phone2: phone.slice(3, 7),
      phone3: phone.slice(7, 11),
      status: row.status === '대기' ? '판매대기' : '판매완료' })
  }, [detail.data, form])

  const save = useMutation({
    mutationFn: async (values: Record<string, unknown>) => {
      const products = Array.isArray(values.products) ? values.products.join(',') : String(values.products ?? '')
      const payload: Record<string, unknown> = {
        ...values,
        products,
        status: values.status === '판매대기' ? '대기' : '완료',
        phone: `${values.phone1}-${values.phone2}-${values.phone3}`,
        installDate: values.installDate ? dayjs(values.installDate as dayjs.Dayjs).format('YYYY-MM-DD') : dayjs().format('YYYY-MM-DD'),
        receiptDate: values.receiptDate ? dayjs(values.receiptDate as dayjs.Dayjs).format('YYYY-MM-DD') : dayjs().format('YYYY-MM-DD'),
        settleAmount: values.settleAmount ?? 0,
        margin: values.margin ?? 0,
        extraPolicy: values.extraPolicy ?? 0 }
      delete payload.phone1
      delete payload.phone2
      delete payload.phone3
      if (editId) {
        const { data } = await client.put(`${apiPrefix()}/homesales/${editId}`, payload)
        return unwrap(data as ApiResponse)
      }
      const { data } = await client.post(`${apiPrefix()}/homesales`, payload)
      return unwrap(data as ApiResponse)
    },
    onSuccess: () => {
      message.success(editId ? '수정했습니다.' : '홈상품판매를 등록했습니다.')
      navigate('/care/open/home')
    },
    onError: (e: Error) => message.error(e.message) })

  return (
    <div className="home-write-page">
      <div className="stock-title">
        <div>
          <h2><HomeOutlined style={{ marginRight: 8 }} />홈상품판매 등록</h2>
          <p>판매하신 정보를 아래의 양식에 맞게 차례대로 입력해주세요. ('필수' 표시는 필수항목입니다.)</p>
        </div>
      </div>

      <Form
        form={form}
        layout="horizontal"
        labelCol={{ flex: '100px' }}
        wrapperCol={{ flex: 1 }}
        initialValues={{
          status: '판매완료',
          installDate: dayjs(),
          receiptDate: dayjs(),
          phone1: '010',
          missingDocs: '관계없음',
          products: [],
          extraPolicy: 0,
          settleAmount: 0 }}
        onFinish={(values) => save.mutate(values)}
      >
        <Card className="open-section" size="small" title="가입정보">
          <Row gutter={24}>
            <Col xs={24} md={12}>
              <Form.Item name="status" label="상태" rules={[{ required: true }]}>
                <Radio.Group options={[{ value: '판매대기', label: '판매대기' }, { value: '판매완료', label: '판매완료' }]} />
              </Form.Item>
              <Form.Item name="installDate" label="설치일" rules={[{ required: true }]}>
                <DatePicker className="full-width" />
              </Form.Item>
              <Form.Item name="receiptDate" label="접수일" rules={[{ required: true }]}>
                <DatePicker className="full-width" />
              </Form.Item>
              <Form.Item name="outcompanyName" label="출고처" rules={[{ required: true, message: '출고처를 입력하세요' }]}>
                <Input placeholder="출고처명을 입력해주세요." />
              </Form.Item>
              <Form.Item name="incompanyId" label="입고처">
                <Select allowClear placeholder="- 선택 -" options={inOptions} />
              </Form.Item>
            </Col>
            <Col xs={24} md={12}>
              <Form.Item name="customerName" label="고객명" rules={[{ required: true, message: '고객명을 입력하세요' }]}>
                <Input />
              </Form.Item>
              <Form.Item label="휴대폰" required>
                <Space.Compact>
                  <Form.Item name="phone1" noStyle rules={[{ required: true }]}>
                    <Select className="w-100" options={options(['010', '011', '016', '017', '018', '019'])} />
                  </Form.Item>
                  <Form.Item name="phone2" noStyle rules={[{ required: true }]}>
                    <Input className="w-100" maxLength={4} />
                  </Form.Item>
                  <Form.Item name="phone3" noStyle rules={[{ required: true }]}>
                    <Input className="w-100" maxLength={4} />
                  </Form.Item>
                </Space.Compact>
              </Form.Item>
              <Form.Item name="telecom" label="통신사">
                <Select allowClear placeholder="- 선택 -" options={options(['SKT', 'KT', 'LGU+'])} />
              </Form.Item>
              <Form.Item name="outCategory" label="출고분류">
                <Select allowClear options={options(['판매점', '도매'])} />
              </Form.Item>
              <Form.Item name="employee" label="직원">
                <Select allowClear options={options(['demo'])} />
              </Form.Item>
            </Col>
          </Row>
          <Form.Item name="address" label="주소">
            <Input />
          </Form.Item>
        </Card>

        <Card className="open-section" size="small" title="상품">
          <Form.Item name="products" rules={[{ required: true, message: '판매하신 상품을 선택해주세요.' }]}>
            <Checkbox.Group className="home-product-checks" options={productOptions.map((v) => ({ value: v, label: v }))} />
          </Form.Item>
          <p className="home-product-hint">판매하신 상품을 선택해주세요.</p>
        </Card>

        <Card className="open-section" size="small" title="정산정보">
          <Row gutter={24}>
            <Col xs={24} md={12}>
              <Form.Item name="missingDocs" label="미비서류">
                <Select options={options(['관계없음', '신분증', '통장사본', '기타'])} />
              </Form.Item>
              <Form.Item name="extraPolicy" label="추가정책">
                <InputNumber className="full-width" controls={false} addonAfter="원" />
              </Form.Item>
              <Form.Item
                name="settleAmount"
                label="정산금액"
                extra={<span className="unitcost-extra">* 각 상품 정책금액 + 추가정책 (마이너스 표기)</span>}
              >
                <InputNumber className="full-width home-settle-input" controls={false} addonAfter="원" />
              </Form.Item>
              <Form.Item name="margin" label="마진">
                <InputNumber className="full-width" controls={false} addonAfter="원" />
              </Form.Item>
            </Col>
            <Col xs={24} md={12}>
              <Form.Item name="memo" label="메모">
                <Input.TextArea rows={4} />
              </Form.Item>
            </Col>
          </Row>
        </Card>

        <div className="open-actions">
          <Button onClick={() => navigate('/care/open/home')}>목록</Button>
          <Button type="primary" htmlType="submit" loading={save.isPending}>{editId ? '수정' : '등록'}</Button>
        </div>
      </Form>
    </div>
  )
}